// Pos小票打印
public Result PosPrintHtml(string html, string printName)
{
try
{
PrintDocument pd = new PrintDocument();
//设置边距
Margins margin = new Margins(0, 0, 0, 0);
pd.DefaultPageSettings.Margins = margin;
//启用页边距，获取或设置一个值，该值指示与页关联的图形对象的位置是位于用户指定边距内，还是位于该页可打印区域的左上角。
pd.OriginAtMargins = true;
//打印事件设置
pd.PrintPage += new PrintPageEventHandler((object sender, PrintPageEventArgs e) =>
{
try
{
//1、计算打印内容的宽高
var bmp = new Bitmap(1, 1);
var g = Graphics.FromImage(bmp);
var size = TheArtOfDev.HtmlRenderer.WinForms.HtmlRender.Measure(g, html);
g.Dispose();
bmp.Dispose();
var contentWidth = Convert.ToInt32(Math.Ceiling(size.Width));
var contentHeight = Convert.ToInt32(Math.Ceiling(size.Height));
//2、打印内容转化为图片
bmp = new Bitmap(contentWidth, contentHeight);
g = Graphics.FromImage(bmp);
TheArtOfDev.HtmlRenderer.WinForms.HtmlRender.Render(g, html, new Point(0, 0), size);
#if DEBUG
bmp.Save($"{Environment.TickCount}.B.bmp");
Logger?.Log($"measure size: width = {size.Width}; height = {size.Height}");
#endif
g.Dispose();
//3、打印转化好的图片
int x = e.MarginBounds.X;
int y = e.MarginBounds.Y;
Rectangle destRect = new Rectangle(0, 0, bmp.Width, bmp.Height);
e.Graphics.DrawImage(bmp, destRect, x, y, bmp.Width, bmp.Height, GraphicsUnit.Pixel);
}
catch (Exception ex)
{
this.Logger?.Log(ex.Message);
}
});
//指定默认打印机的名称
printName = GetDefaultPrintName(printName);
if (string.IsNullOrEmpty(printName))
{
return(Result.BuilderStream(0, "未找到可用打印机"));
}
pd.PrinterSettings.PrinterName = printName;
if (!pd.PrinterSettings.IsValid)
{
return(Result.BuilderStream(0, $"打印机[{printName}]无效"));
}
if (printName.ToLower().Contains("xps"))
{
var directoryName = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var portName = Path.Combine(directoryName, $"{Environment.TickCount}.xps");
var vPrinter = new VirtualPrinter(printName, portName);
vPrinter.SetPort(portName);
}
pd.Print();
return(Result.BuilderStream(100));
}
catch (Exception ex)
{
this.Logger?.Log(ex.Message);
return(Result.BuilderStream(0, ex.Message));
}
}
// type [1为会员 ,2为员工]
public Result PrintImage(string imgUrl, string printName)
{
try
{
PrintDocument pd = new PrintDocument();
//设置边距
Margins margin = new Margins(0, 0, 0, 0);
pd.DefaultPageSettings.Margins = margin;
//横向
pd.DefaultPageSettings.Landscape = true;
//启用页边距，获取或设置一个值，该值指示与页关联的图形对象的位置是位于用户指定边距内，还是位于该页可打印区域的左上角。
pd.OriginAtMargins = true;
//打印事件设置
pd.PrintPage += new PrintPageEventHandler((object sender, PrintPageEventArgs e) =>
{
try
{
var img = LoadImageFromUrl(imgUrl);
if (img == null)
{
return;
}
int x = e.MarginBounds.X;
int y = e.MarginBounds.Y;
int width = e.MarginBounds.Width;
int height = e.MarginBounds.Height;
Rectangle destRect = new Rectangle(0, 0, width, height);
e.Graphics.DrawImage(img, destRect, x, y, img.Width, img.Height, GraphicsUnit.Pixel);
img.Dispose();
}
catch (Exception ex)
{
this.Logger?.Log(ex.Message);
}
});
//指定默认打印机的名称
printName = GetDefaultPrintName(printName);
if (string.IsNullOrEmpty(printName))
{
return(Result.BuilderStream(0, "未找到可用打印机"));
}
pd.PrinterSettings.PrinterName = printName;
if (!pd.PrinterSettings.IsValid)
{
return(Result.BuilderStream(0, $"打印机[{printName}]无效"));
}
if (printName.ToLower().Contains("xps"))
{
var directoryName = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var portName = Path.Combine(directoryName, $"{Environment.TickCount}.xps");
var vPrinter = new VirtualPrinter(printName, portName);
vPrinter.SetPort(portName);
}
pd.Print();
return(Result.BuilderStream(100));
}
catch (Exception ex)
{
this.Logger?.Log(ex.Message);
return(Result.BuilderStream(0, ex.Message));
}
}